/**
 * Copyright 2016 Twitter. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


package com.twitter.graphjet.algorithms.salsa.subgraph;

import com.twitter.graphjet.algorithms.salsa.SingleSalsaIteration;

public class RightSubgraphSalsaIteration extends SingleSalsaIteration {
  private final SalsaSubgraphInternalState salsaSubgraphInternalState;

  public RightSubgraphSalsaIteration(SalsaSubgraphInternalState salsaSubgraphInternalState) {
    this.salsaSubgraphInternalState = salsaSubgraphInternalState;
  }

  /**
   * Runs a single right-to-left SALSA iteration. This direction resets some of the random walks
   * to start again from the queryNode.
   */
  @Override
  public void runSingleIteration() {
    LOG.info("SALSA: running right subgraph iteration");
    salsaSubgraphInternalState.traverseSubgraphRightToLeft();
  }
}
